Abstract
Bonito plays an important role as the main ingredient for marinated products and provides a livelihood for coastal communities. Given the emergence of Indonesia's over-exploited small-scale marine fisheries resources, this study aims to characterize and evaluate fishery’s sustainability based on bioeconomic analyses. Time series catch and effort data were collected from 2005 to 2019 provided by Archipelagic Fishing Port of Prigi. Five surplus production models were also employed to generate catch-and-effort-based biological parameters, namely intrinsic growth rate (r), catchability (q), and carrying capacity (K). By adding economy parameters such as cost and price, the sustainability of catch and effort was also estimated at three management conditions. The catch abundance was peaked in April and September, characterized by the lack of rain. The CPUE was varied inter-annually. However, it declined during the last decade, indicating that the stock size was decreased. Although the average catches from 2015-2019 (9,984 tons) are lower than CMSY (11,695 tons). However, the effort in 2019 (15,239 trips) has exceeded EMEY (14,237 trips). Hence, reducing fishing efforts or maintaining it at E2018 level was suggested as a precaution to keep the fishery’s sustainability and simultaneously generate optimum profit.
Highlights
One of the economically essential fisheries resources is bonitos (Auxis spp.), the main ingredient of marinated fish products
The mini purse seiner was characterized as a one-pair method that one fishing unit consists of two boats less than 30 gross tonnages (GT) in volume which was equipped by 140 to 160 hp main engine
This study underlined that the purse seine was an adequate fishing gear to catch bonitos that are commonly found in large schooling
Summary
One of the economically essential fisheries resources is bonitos (Auxis spp.), the main ingredient of marinated fish products It can be found in almost all tropical and subtropical waters with an optimum temperature range between 27 – 27.9o C [1,2]. In Indonesia, fisheries are managed by the government incorporating local wisdom and customary rules that are well-established in the community In this management regime, the people have equal rights to access the resources in order to get the maximum benefit [7]. The people have equal rights to access the resources in order to get the maximum benefit [7] These conditions cause an increased investment in terms of the fishing unit includes new boats, fishing gears, engines, laborers, etc., and it threatens the stock healthiness [8,9,10]. The fishers can utilize it to obtain an optimum economic benefit for the long-term period [11,12]
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